public static CTypes.CData /*!*/ CheckCDataType(object o, object type)
{
CTypes.CData res = o as CTypes.CData;
if (res == null && PythonOps.TryGetBoundAttr(o, "_as_parameter_", out object asParam))
{
res = asParam as CTypes.CData;
}
bool valid = true;
// if we have an array, we can also send a pointer as long as the element types
// for the pointer and array are the same
if (res != null && res.NativeType is CTypes.ArrayType at)
{
valid = ((type is CTypes.ArrayType t) && (t.ElementType == at.ElementType)) ||
((type is CTypes.PointerType p) && (p._type == at.ElementType));
}
if (res == null || !valid)
{
throw ArgumentError(type, ((PythonType)type).Name, o);
}
return(res);
}
public static object CreateCData(IntPtr dataAddress, PythonType type)
{
CTypes.INativeType nativeType = (CTypes.INativeType)type;
CTypes.CData data = (CTypes.CData)type.CreateInstance(type.Context.SharedContext);
data._memHolder = new MemoryHolder(nativeType.Size);
data._memHolder.CopyFrom(dataAddress, new IntPtr(nativeType.Size));
return(data);
}
public static object CreateNativeWrapper(PythonType type, object holder)
{
Debug.Assert(holder is MemoryHolder);
CTypes.CData data = (CTypes.CData)type.CreateInstance(type.Context.SharedContext);
data._memHolder = (MemoryHolder)holder;
return(data);
}
public static CTypes.CData /*!*/ CheckCDataType(object o, object type)
{
CTypes.CData res = o as CTypes.CData;
object asParam;
if (res == null && PythonOps.TryGetBoundAttr(o, "_as_parameter_", out asParam))
{
res = asParam as CTypes.CData;
}
if (res == null || res.NativeType != type)
{
throw ArgumentError(type, ((PythonType)type).Name, o);
}
return(res);
}
public static CTypes.CData TryCheckCDataPointerType(object o, object type)
{
CTypes.CData res = o as CTypes.CData;
object asParam;
if (res == null && PythonOps.TryGetBoundAttr(o, "_as_parameter_", out asParam))
{
res = asParam as CTypes.CData;
}
if (res != null && res.NativeType != ((CTypes.PointerType)type)._type)
{
if (!(res is CTypes.Pointer))
{
throw ArgumentError(type, ((PythonType)((CTypes.PointerType)type)._type).Name, o);
}
return(null);
}
return(res);
}
